根据组合框选择更改文本框的值

Question

I am new in C# here i am trying to bind combo box with access database. I bound the combo box with column name but i can not display the value of details(Column) in text box based on the selection of combo box.

in my database there is a table which contain the 3 coloumn 1.id 2.wesitename 3.Details and this is my code

 private void button1_Click_1(object sender, EventArgs e)
        {
 string ConnectionString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\\Users\\nazarmak\\Documents\\newwebsite.accdb;Persist Security Info=True";

        OleDbConnection con = new OleDbConnection(ConnectionString);
        OleDbCommand cmd = new OleDbCommand("select websitename, Details from newweb", con);
        OleDbDataAdapter da = new OleDbDataAdapter();

         DataTable dt = new DataTable();

        try
        {
            con.Open();
            da.SelectCommand = cmd;
            da.Fill(dt);


            this.comboBox1.DisplayMember = "websitename";
            this.comboBox1.ValueMember = "websitename";
            this.comboBox1.DataSource = dt;



        }
        catch (System.Exception ex)
        {
            MessageBox.Show(ex.Message);


        }
        finally
        {

            con.Close();
        }

    }

Answer 1

set

this.comboBox1.ValueMember = "Details";

then you can get details as this.comboBox1.SelectedValue

Answer 2

Or maybe you can do something like this

private void MyCombobox_SelectedIndexChanged(object sender, EventArgs e)

{
MyTextbox.text=dt.Rows[MyCombobox.SelectedValue]["details"].ToString();
}

I guess this is what you are looking for

Answer 3

As I see, you might be storing tables as the items of ComboBox. In this case if you want to look into columns and contents of each column (row details) you can try this in your event handler:

    DataColumnCollection columns = dt.Columns;
    DataRowCollection rows = dt.Rows;

    foreach (DataColumn column in columns)
    {
        textBox1.AppendText(column.ColumnName + ": ");

        foreach (DataRow row in rows)
        {
            //display the cell value
            textBox1.AppendText(row[column.ColumnName].ToString());
        }

        textBox1.AppendText(Environment.NewLine);

    }